Supermicro X10QRH+ User Manual page 91

Chapter 4: AMI BIOS
Gen3 (Generation 3) DN RX Preset Hint
Use this item to set the Preset Hint mode for PCI-E Gen3 downstream recep-
tion (from a slave device to the master device). The options are Auto, P0 (-6.0
dB), P1 (-7.0 dB), P2 (-8.0 dB), P3 (-9.0 dB), P4 (-10.0 dB) P5 (-11.0 dB), and
P6 (-12.0 dB).
Gen3 (Generation 3) Up TX Preset
Use this item to set the Preset mode for PCI-E Gen3 upstream transactions (from
a slave device to the master device).The options are Auto, P0 (-6.0/0.0 dB),
P1 (-3.5/0.0 dB), P2 (-4.5/0.0 dB), P3 (-2.5/0.0 dB), P4 (0.0/0.0 dB), P5 (0.0/2.0
dB), P6 (0.0/2.5 dB), P7 (-6.0/3.5 dB), P8 (-3.5/3.5 dB), and P9 (0.0/3.5 dB).
Hide Port?
Select Yes to hide the PCI-E port specifi ed from the OS. The options are No
and Yes.
IOAT Confi guration
Enable IOAT
Select Enable to enable Intel I/OAT (I/O Acceleration Technology), which signifi -
cantly reduces CPU overhead by leveraging CPU architectural improvements
and freeing the system resource for other tasks. The options are Enable and
Disable.
No Snoop
Select Enable to support no-snoop mode for each CB device. The options are
Disable and Enable.
Relaxed Ordering
Select Enable for relaxed ordering support, which will allow certain transactions
to be processed and completed prior to other transactions that have already
been queued and that violate the strict ordering rules of PCI processing. The
options are Disable and Enable.
 Intel VT for Directed I/O (VT-d)
Intel ® VT for Directed I/O (VT-d)
Select Enable to enable Intel Virtualization Technology support for Direct I/O
VT-d by reporting the I/O device assignments to the VMM (Virtual Machine
Monitor) through the DMAR ACPI Tables. This feature offers fully-protected I/O
resource sharing across Intel platforms, providing greater reliability, security and
availability in networking and data-sharing. The options are Enable and Disable.
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